MONTANA DE ORO STATE PARK
California - Transient Non-Community - PWSID: CA4010305
System Information
| PWSID | CA4010305 |
| System Name | MONTANA DE ORO STATE PARK |
| System Type | Transient Non-Community |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 6, 1994 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | SAN SIMEON |
| ZIP Code | 93452 |
| Address | 750 Hearst Castle Road |
| Organization | THORIN, BLAKE |
| Phone | - |
Population & Service
| Population Served | 990 |
| Service Connections | 3 |
Drinking Water Violations (7)
This water system has 7 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2023 | Dec 31, 2023 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | No | - | 10 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Oct 1, 2017 | - | MR | No | Yes | - | - | - | Resolved | Oct 1, 2017 | - | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2006 | - | |
| Jun 1, 2006 | Jun 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2006 | - | |
| Jan 1, 1993 | Jan 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1993 | - | |
| Jan 1, 1993 | Jan 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1993 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.